Chemical fire-extinguisher.



No. 713,946. Patented Nov. I8, 1902.

F. .1. BRISCHAR.

*CHEMICAL FIRE EXTINGUISHER.

(Application filed May 10, 1902.

I (No Model.)

THE NORRIS wzrzns co. Mum-umu, WASHVNGTQN. n. c,

NITED STATES PATENT OFFICE.

FRANZ JOSEPH BRISOI'IAR, OF ZURICH, SWITZERLAND, ASSIGNOR TO SODOR- FABRIK ZURICH, OF ZURICH, SYVITZERLAND, A FIRM.

CHEMICAL FIRE-EXTINGUISHER.

sPTEOIFIOATION forming part of Letters Patent No. 713,946, dated November 18, 1902.

Application filed May 10, 1902. Serial No. 106,803. (No model.)

To ctZZ whom it may concern.-

Be it known that I, FRANZ JOSEPH BRIS- CHAR, a subject of the King of Wiirtemberg, residing at Zurich, Switzerland, have invented new and useful Improvements in Fire-Engines or Extinguishing Apparatus, of which the following is a specification.

The present invention relates to a fire-engine in which a device for opening closed capsules is arranged on a closed tank for liquid, which capsules contain highly-compressed or liquefied gases, so that before using the fire-engine the capsules can be discharged into the tank, thus placing the latter under pressure for the purpose of enabling it to force out the liquid in the container.

A constructional form of the invention is illustrated in vertical section by way of example in the accompanying drawing.

Therein a is the tank or receptacle for liquid, which is provided with a filling-tube I), closed by a screw-plug, by means of which the tank can be filled with liquid. A pipe 0 passes from the bottom of the receptacle to the cover, where it is fixed and connected with an additional piece (1, projecting outside the receptacle, which can be closed by a cock. This additional piece cl serves for receiving the end of a fire-hose. On the cover of the receptacle there is, further, a device for opening closed capsules containing highly-compressed or liquefied gases. This device has a base-plate e, which is provided with a number of cavitiesffor receiving the neck of the usual capsules g, containing said gases, and also in each cavity there is a rubber or other compressible cushion 4, provided with a central passage 5, in which is a mandrel h for piercing the wall of the capsule, and with passages for allowing the highly-compressed or liquefied gases to pass into the fluid-receptacle. A screw 7.; can be screwed into the base-plate c by means of the handle t, fixed to the pin thereof. On the pin above the 5 screw 70 is formed a shoulder 2, that takes on a rubber or other compressible ring 3. Loosely set on the pin of the screw there is, besides, apressure-cap Z, which is provided with a number of recesses for receiving the upper ends of the capsules g. The pressurecap has at the top a ball-race m, provided with balls, as shown. One side of the handle presses against these balls. The pressurecap is prevented from turning by a pin 02, which is fixed to the base-plate e, and engages in a hole in the pressure-cap.

The method of operation of the apparatus described is as follows: To use the engine, the handle 1' is turned and the pressure-screw 713 consequently screwed into the base-plate e. Thereby the pressure cap 1, which moves down with the screw, presses on the capsules 9 and drives the mandrels h into the capsules, which are thereby opened and can then discharge themselves into the tank. The compressible cushions 4 hold the ends of the capsnles g normally out of contact with the mandrels h in the central passage 5. This passage being considerably larger than the mandrel therein, the liquid gas will have free pas- 7o sage around the mandrel into the tank a. The balls in the groove m when the screw is turned by means of the handle 7; support the pressure thereof. By means of the gases of the capsules g the fluid in the receptacle is placed under pressure, so that it is squirted out when the cock of the piece d is opened.

It requires a considerable amount of force to drive the mandrels it into the capsules g. The mechanism could, however, be arranged so that the capsules are opened singly, one shortly after another, in order to avoid having to exert great force.

As shown, the filling-tube b extends some distance into the container or tank a, and as the necks of the capsules g fit fluid-tight into their seats the tank cannot be completely filled with liquid by reason of the air-cushion above such liquid after it seals the inner end of the tube, thus leaving sufi'icient space in the upper end of the tank to admit of the gas from the capsules expanding and placing the liquid under pressure and driving it out through pipe 0 when its stop'cock is opened.

Having now particularly described and as- 5 certained the nature of my said invention and in what manner the same is to be performed,

I declare that what I claim is 1. A tank provided in its head with a plurality of seats in communication therewith, 10o

holders for a compressed or liquefied gas fitting into said seats, devices to rupture the outlet end of the holders, means to force the holders on the said devices and a valved discharge-pipe having its inlet near the bottom of the tank, for the purpose set forth.

2. A tank provided in its head with movable seats in communication therewith, fixed pins in line with an axial aperture in said seats, inverted holders for a compressed or liquefied gas fitting into the seats, means for forcing the holders onto the pins and thereby rupturing their closed outlet and a valved discharge-pipe having its inlet near the bottom of the tank, for the purpose set forth.

3. A tank provided in its head with seats in communication therewith,inverted holders for a compressed or liquefied gas fitting said seats fluid-tight, means for rupturing the closed outlet of the holders, a closable fillingtube extending through the head of the tank some distance into the same, and a valved discharge-pipe having its inlet near the bottom of said tank, for the purpose set forth.

4.. A tank provided in its head with seats in communication therewith, inverted bottleshaped holders for a compressed or liquefied gas, the necks of which fit into said seats, means for rupturing the closed mouth of said holders and a valved discharge-pipe having its inlet near the bottom of the tank, for the purpose set forth.

5. Atank provided in its head with movable seats, fixed pins in line with an axial aperture in said seats, bottle-shaped holders for a compressed or liquefied gas the necks of which fit into said seats, a cap-plate bearing on the bottoms of the holders, means for applying pressure to said cap-plates to force the necks of the bottle-shaped holders onto the aforesaid pins to rupture the closed mouths of said holders, and a valved discharge-pipe having its inlet near the bottom of the tank, for the purpose set forth.

6. A tank provided in its head with apertured movable seats, fixed pins in line with an axial aperture in said seats, bottle-shaped holders for a compressed or liquefied gas, the necks of which fit into the aforesaid seats, a cap-plate having recesses for the bottoms of the holders, a screw-pin screwing into a fixed socket disposed axially of the holders, a handle secured to said pin and having bearing on said cap-plate for forcing the latter and the holders onto the pins to rupture the closed mouths thereof, and a valved discharge-pipe having its inlet near the bottom of the tank, for the purpose set forth.

7. A tank provided in its head with a ringplate having a central internally-threaded socket and a concentric row of apertures, apertured disks secured in the inner end of said apertures each carrying an axial fixed pin, movable seats above said pins having an axial passage in line therewith and bottleshaped holders for a compressed or liquefied gas whose necks fit into said seats, in combination with a fixed cap-plate having recesses for the butts of said holders and a ball-race in its upper face, a screw-pin passing through said cap-plate and screwing into the socket of the aforesaid ring-plate, a handle secured to said screw-pin provided with a circular flange having a ball-race in its under face, balls interposed between said flange and the cap-plate and a valved discharge-pipe having its inlet near the bottom of the tank, for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANZ JOSEPH BRISCHAR.

Witnesses A. LIEBERKNEOHT, MORITZ VEITH. 

